References and Notes for Barium ( Ba )

B. H. Post, W. Vassen, W. Hogervorst, M. Aymar, and O. Robaux, J. Phys. B 18, 187 (1985). The value for the Ba I ionization energy quoted here is 0.01 cm-1 higher than the value given in this reference, as suggested in [KL99] on the basis of an improved value for the 6s5d3D1 level.